EP 1854626 A1 20071114 - Thermoformable packaging film
Title (en)
Thermoformable packaging film
Title (de)
Thermoformbare Verpackungsfolien
Title (fr)
Film d'emballage thermoformable
Publication
Application
Priority
- EP 02721639 A 20020328
- US 28054801 P 20010330
Abstract (en)
This invention is directed to a thermoformable film comprising a composite structure of at least three layers firmly adhered to one mother, a top and bottom layer and an inner layer; wherein the top and bottom layer of the composite structure comprise a film layer of an ethylene vinyl acetate copolymer comprising 1 to 25% hy weight, based on the weight of the copolymer, of polymerized vinyl acetate and 75 to 99% by weight, based on the weight of the copolymer, of polymerized ethylene and the inner layer of the composite structure comprises a film of polymer blend of the following: (a) 40 to 95% by weight, based on the weight of the polymer blend, of an ethylene based copolymer comprises repeating polymerized units of (1) at least 50% by weight, based on the weight of the copolymer, of ethylene, (2) 1 to 30% by weight, based on the weight of the copolymer, of acrylic acid or methacrylic acid; and (3) up to 40% by weight, based on the weight of the copolymer, of an alkyl acrylate or an alkyl methacrylate, wherein the copolymer has 5 to 100% of the acid groups neutralized with metal ion selected from the following group: zinc, magnesium, sodium and lithium, and (b) 5 to 60% by weight, based on the weight of the polymer blend, of a metallocene catalyzed polyethylene; other thermoformable film constructions, such as, a 2 layer construction and constructions greater than 3 layers, such as 5 layers; and a mono layer of the film of a blend of the ethylene based copolymer and the metallocene catalyzed polyethylene also are part of this invention.
IPC 8 full level
B32B 27/32 (2006.01); B65D 1/00 (2006.01); B32B 27/28 (2006.01); B65D 65/40 (2006.01); C08J 5/18 (2006.01); C08L 23/04 (2006.01); C08L 23/08 (2006.01); C08L 23/26 (2006.01)
CPC (source: EP US)
B32B 27/08 (2013.01 - US); B32B 27/18 (2013.01 - US); B32B 27/32 (2013.01 - EP US); C08L 23/04 (2013.01 - EP US); C08L 23/08 (2013.01 - EP US); C08L 23/0815 (2013.01 - EP US); B32B 2323/04 (2013.01 - US); B32B 2439/80 (2013.01 - US); C08L 23/0876 (2013.01 - EP US); C08L 2203/12 (2013.01 - EP US); C08L 2314/06 (2013.01 - EP US); Y10T 428/13 (2015.01 - EP US); Y10T 428/1352 (2015.01 - EP US); Y10T 428/1355 (2015.01 - EP US); Y10T 428/1359 (2015.01 - EP US); Y10T 428/1362 (2015.01 - EP US); Y10T 428/1379 (2015.01 - EP US); Y10T 428/31855 (2015.04 - EP US); Y10T 428/31909 (2015.04 - EP US); Y10T 428/31913 (2015.04 - EP US); Y10T 428/31928 (2015.04 - EP US); Y10T 428/31935 (2015.04 - EP US)
Citation (applicant)
- US 5972447 A 19991026 - HATA NOBUHIRO [JP], et al
- US 5543477 A 19960806 - LATIOLAIS JERRY G [US], et al
- US 4239826 A 19801216 - KNOTT JACK E II [US], et al
- "Film Extrusion Manual", 1992, TAPPI PRESS
Citation (search report)
- [A] US 5543477 A 19960806 - LATIOLAIS JERRY G [US], et al
- [A] US 4239826 A 19801216 - KNOTT JACK E II [US], et al
- [DA] US 4335175 A 19820615 - WEBB JAMES L
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 02078885 A1 20021010; AT E360495 T1 20070515; AT E442250 T1 20090915; CA 2438082 A1 20021010; CN 1328041 C 20070725; CN 1500041 A 20040526; DE 60219773 D1 20070606; DE 60219773 T2 20080124; DE 60233690 D1 20091022; EP 1372893 A1 20040102; EP 1372893 B1 20070425; EP 1854626 A1 20071114; EP 1854626 B1 20090909; HK 1066191 A1 20050318; JP 2004532140 A 20041021; JP 4381682 B2 20091209; MX PA03008722 A 20031211; US 2003044551 A1 20030306; US 2006073297 A1 20060406; US 6998157 B2 20060214
DOCDB simple family (application)
US 0210043 W 20020328; AT 02721639 T 20020328; AT 07008263 T 20020328; CA 2438082 A 20020328; CN 02807659 A 20020328; DE 60219773 T 20020328; DE 60233690 T 20020328; EP 02721639 A 20020328; EP 07008263 A 20020328; HK 04109221 A 20041122; JP 2002577137 A 20020328; MX PA03008722 A 20020328; US 28419805 A 20051121; US 9408302 A 20020308